HP 7840HS Manuals

Manuals and User Guides for HP 7840HS. We have 1 HP 7840HS manual available for free PDF download: Maintenance And Service Manual

HP 7840HS Maintenance And Service Manual (178 pages)

Brand: HP | Category: Laptop | Size: 17.65 MB

Table of Contents
4
Product Description
10
Components
14
Right
14
Left
15
Display
16
Auto Lock and Awake
16
Low Blue Light Mode (Select Products Only)
16
Keyboard Area
18
Touchpad
18
Touchpad Settings
18
Adjusting Touchpad Settings
18
Turning on the Touchpad
18
Touchpad Components
18
Lights
19
Power Button, Speakers, and Fingerprint Reader
21
Special Keys
22
Bottom
23
Rear
24
Labels
24
Using Tile (Select Products Only)
26
Illustrated Parts Catalog
27
Computer Major Components
27
Display Assembly Subcomponents
31
Cables
32
Miscellaneous Parts
33
Removal and Replacement Procedures Preliminary Requirements
37
Tools Required
37
Service Considerations
37
Plastic Parts
37
Cables and Connectors
37
Drive Handling
37
Electrostatic Discharge Information
38
Generating Static Electricity
38
Preventing Electrostatic Damage to Equipment
39
Personal Grounding Methods and Equipment
39
Grounding the Work Area
40
Recommended Materials and Equipment
40
Cleaning Your Computer
41
Enabling HP Easy Clean (Select Products Only)
41
Removing Dirt and Debris from Your Computer
41
Cleaning Your Computer with a Disinfectant
42
Caring for Wood Veneer (Select Products Only)
43
Packaging and Transporting Guidelines
43
Accessing Support Information
44
Removal and Replacement Procedures for Authorized Service Provider Parts
46
Component Replacement Procedures
46
Preparation for Disassembly
46
Bottom Cover
46
Battery
48
Memory Modules
49
Solid-State Drive
51
WLAN Module
52
RTC Battery
54
Card Reader Board
55
NFC Module
57
Touchpad
58
Fans
59
Fingerprint Reader Board
61
Sensor Board
62
System Board
63
Speakers
66
Heat Sink
67
Display Assembly
68
Top Cover with Keyboard
75
Troubleshooting Guide
77
Resources
77
General Troubleshooting Steps
78
Identify the Issue
78
Understand the Issue
79
Boot-Up Sequence
79
Failure Classification
79
Examine the Environment
81
Perform a Visual Inspection of Hardware
81
Update BIOS and Drivers
82
Manually Updating BIOS and Drivers
82
Remotely Deploying the BIOS and Drivers
82
Analyze the Issue
82
Remove or Uninstall Recently Added Hardware, Software
82
HP Hardware Diagnostics and Tools
82
HP PC Hardware Diagnostics (UEFI)
83
HP BIOS Configuration Utility (BCU)
84
HP Image Diagnostic Tool
85
HP Thermal Monitor
85
Non HP Diagnostics Tools
85
Status Lights, Blinking Light Codes, Troubleshooting Lights, and POST Error Messages
85
Status Lights
85
Blinking Light Codes
86
POST Error Messages
87
Resolve the Issue
88
Hard Reset
88
Soft Reset (Default Settings)
89
10. Reseat Cables and Connections
89
11. Test with Minimum Configuration
90
Essential Hardware Configuration
90
Safe Mode
91
Test with Verified Working Configuration (Hardware or Operating System)
91
13. Replace the System Board
92
Verify Solution
92
Helpful Hints
93
At Startup
93
During Operation
93
Consulting with HP Service
94
Common Issues and Possible Solutions
95
Power-On Issues
95
No Power
95
Intermittent Power-On, Shutdown, Reboot
97
AC Adapter Issue
98
Battery Not Recognized, Not Charging
98
Battery Discharges too Fast
101
Burnt Smell
101
Post
102
No Video (with Power)
102
Blinking Lights
103
Diagnostic Error Messages
104
BIOS Password
104
Performance (OS)
105
Intermittent Shutdown
105
Blue Screen
107
Freeze at Windows Logo (Hang or Lockup)
108
Electromagnetic Interference (EMI)
109
No Wake up
110
Unresponsive
111
Slow Performance
112
HP Smart Adapter Warning Message
112
Incorrect Time and Date
113
Display
114
Display Anomalies
114
Symptom
114
Quick Check
115
HP PC Hardware Diagnostics (UEFI) for Video Test
115
Display Assembly Diagram
115
Dead Pixel
116
No Video (Internal)
116
No Video (External)
116
Displayport/Vga
117
Hdmi
117
No or Bad External Video Via Docking
118
Incorrect or Missing Color/Distorted Image
118
Touch Screen
119
I/O Devices
120
Keyboard
120
Keyboard Pointing Stick (Select Products Only)
121
Keyboard Backlight
122
Touchpad
122
Network Connectivity (RJ-45 Jack)
123
Network Connectivity Wireless (WLAN)
123
Wwan
124
Usb
124
Smart Card Reader
125
Speaker, Headphone - Audio Issues
126
Thunderbolt (TB)
127
Storage
128
Hard Drive or Solid-State Drive Not Recognized
129
No Boot to Operating System (no Read-Write Error)
130
Read-Write Error
131
Slow Performance
132
Blue Screen (BSOD) Error
132
Noisy Hard Drive
132
Mechanical
133
Noise (Sound)
133
Fan Runs Constantly
134
Thermal Shutdown (Hot)
135
Additional Information
136
Acronyms
136
Blinking Lights and Boot Error Codes
137
Processor Not Executing Code
138
BIOS Recovery Code Unable to Find Valid BIOS Recovery Image
138
Memory Module Error
138
Graphics Controller Error (no Controller)
138
Failure System Board Error
139
Intel Trusted Execution Technology (TXT) Error
139
Sure Start Unable to Find Valid BIOS Boot Block Image
139
Sure Start Has Identified a Problem (Manual Recovery Policy Set)
139
POST Error Messages and User Actions
140
Routine Maintenance for Performance Improvement
142
Common Blue Screen Error Messages
142
Error Message List
142
Bug Check Symbolic Names
143
Microsoft General Troubleshooting of Windows Bug Check Codes
143
Use Windows Debugging Tool
143
Windows Software Development Kit (SDK)
144
Display Issue: Pixel Anomalies
147
Cable Management
149
Connector Types
149
Flex Cable
149
Horizontal Cable Insertion
150
Multiple-Pin Horizontal Connector (LVDS Cable to Display Panel)
150
Multiple-Pin Vertical Connector (LVDS Cable to System Board)
151
Backing Up, Restoring, and Recovering
152
Backing up Information and Creating Recovery Media
152
Using Windows Tools for Backing up
152
Using the HP Cloud Recovery Download Tool to Create Recovery Media (Select Products Only)
152
Restoring and Recovering Your System
152
Creating a System Restore
153
Restoring and Recovery Methods
153
Recovering Using HP Recovery Media
153
Changing the Computer Boot Order
154
Using HP Sure Recover (Select Products Only)
154
Computer Setup (BIOS), TPM, and HP Sure Start
155
Using Computer Setup
155
Navigating and Selecting in Computer Setup
155
Restoring Factory Settings in Computer Setup
155
Updating the BIOS
156
Determining the BIOS Version
156
Preparing for a BIOS Update
156
Downloading a BIOS Update
157
Installing a BIOS Update
157
Changing the Boot Order Using the F9 Prompt
157
TPM BIOS Settings (Select Products Only)
158
Using HP Sure Start (Select Products Only)
158
Using HP PC Hardware Diagnostics
159
Using HP PC Hardware Diagnostics Windows (Select Products Only)
159
Using an HP PC Hardware Diagnostics Windows Hardware Failure ID Code
159
Accessing HP PC Hardware Diagnostics Windows
159
Accessing HP PC Hardware Diagnostics Windows from HP Support Assistant
159
Accessing HP PC Hardware Diagnostics Windows from the Start Menu (Select Products Only)
160
Downloading HP PC Hardware Diagnostics Windows
160
Downloading the Latest HP PC Hardware Diagnostics Windows Version from HP
160
Downloading the HP PC Hardware Diagnostics Windows from the Microsoft Store
160
Downloading HP Hardware Diagnostics Windows by Product Name or Number
160
Only)
160
Installing HP PC Hardware Diagnostics Windows
161
Using HP PC Hardware Diagnostics UEFI
161
Using an HP PC Hardware Diagnostics UEFI Hardware Failure ID Code
161
Starting HP PC Hardware Diagnostics UEFI
161
Only)
162
Downloading HP PC Hardware Diagnostics UEFI to a USB Flash Drive
162
Downloading the Latest HP PC Hardware Diagnostics UEFI Version
162
Only)
163
Using Remote HP PC Hardware Diagnostics UEFI Settings (Select Products Only)
163
Downloading Remote HP PC Hardware Diagnostics UEFI
163
Downloading the Latest Remote HP PC Hardware Diagnostics UEFI Version
163
Downloading Remote HP PC Hardware Diagnostics UEFI by Product Name or Number
163
Customizing Remote HP PC Hardware Diagnostics UEFI Settings
164
Specifications
165
Computer Specifications
165
Display Specifications
165
Solid-State Drive Specifications
166
Statement of Memory Volatility
168
Current BIOS Steps
168
Nonvolatile Memory Usage
170
Questions and Answers
170
Using HP Sure Start (Select Products Only)
172
Power Cord Set Requirements
173
Requirements for All Countries
173
Requirements for Specific Countries and Regions
173
Recycling
175
Index
176

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HP 7840HS Maintenance And Service Manual (178 pages)

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